| Present "prevent" | I | prevent | |
| Present Continuous "prevent" | I | am preventing | |
| Simple past "prevent" | I | prevented | |
| Past Continuous "prevent" | I | was preventing | |
| Present perfect "prevent" | I | have prevented | |
| Present perfect continuous "prevent" | I | have been preventing | |
| Past perfect "prevent" | I | had prevented | |
| Past perfect continuous "prevent" | I | had been preventing | |
| Future "prevent" | I | will prevent | |
| Future continuous "prevent" | I | will be preventing | |
| Future perfect "prevent" | I | will have prevented | |
| Future perfect continuous "prevent" | I | will have been preventing |